Spanner wrench



March 25, 1930.

vgs. R. GAGNE SPANNER WRENCH FiLed Jan. 26, 1929 INVENTOR BY Q, I

ATTORNEY teeth.

Patented Mar. 25, 1930 UNITED STATES PATENT OFFICE GIDEON R. GAGNE, OFMILVIAUKEE, \VISCONSIN, ASSIGNOR TO BLUE POINT TOOL COMPANY, OFMILWAUKEE, WISCONSIN, A CORPORATION OF ILLINOIS SPQANNER WRENCHApplication filed January 26, 1929. Serial No. 335,249.

The invention relates to spanner wrenches.

In the usual spanner wrenches either a single tooth is provided,associated with a round face, in which event the wrench can be used onlyfor turning a nut in one direction at a single setting or a pair ofdiametrically disposed teeth or projections are provided to closelyinterfit with diametrically disposed recesses in the nut, in which casethe wrench can only be applied by moving it laterally and the wrenchcannot be used in small spaces where the range of throw is limited orwhere the cramped space prevents it being applied. The object of thepresent invention is to provide a spanner wrench for toothed nuts whichmay be directly applied to the nut by movement into engagement therewithat right angles to its axis and will operate to turn the nut in eitherdirection at a single setting and which may be used in cramped or smallspaces where the throw is limited.

The invention further consists in the several features hereinafter setforth and more particularly defined by claims at the conclusion hereof.

In the drawings Fig. 1 is a side elevation view of a wrench embodyingthe invention;

Fig. 2 is a plan view thereof.

Referring to the drawings the numeral 3 designates the shank and 4 thehead of the wrench.

The head 4 is of arcuate formation pro vided with inwardly directed,spaced projec' tions 5 and 6 with curved nut-engaging surfaces 7 and 8.The inner sides 9 of each projection are inclined at a slight angle,preferably about twelve degrees, this angle being referred to the centerabout which the nut 10 turns.

The jaws or projections 5 and 6 are spaced apart a little more than thespace between only two of the teeth 11 of the nut 10, the clearancespace being indicated at 12, and each jaw or projection is of a widthequal to about half of the space between adjacent The result of thisconstruction is that the wrench may be applied directly to the nut by amovement at right angles to the shaft and will operate to-turn the nutin either direction at a single setting, Fig. 1 showing the wrench infull lines applied for turning the nut in a counter-clockwise direction,while the dotted lines show the position of the wrench for turning thenut in the opposite direction. It also provides for turning the nutthrough a wide range even though the field of operation is limited, forexample as shown in Fig. 1, where the wrench is shown as applied to thestuffing box gland nut 10 of a water pump, which pump has a troughportion 13 close to and surounding a portion of the nut.

What I claim as my invention is:

1. A spanner wrench for toothed nuts having a wrench head provided withspaced projections of less width than the space between adjacent teethof the nut, whereby said wrench is applied directly to the nut bymovement at right angles to its axis, and provided withtooth-end-engaging surfaces adjacent said projections.

2. In a spanner wrench for toothed nuts, a wrench head havingprojections spaced to encompass two teeth only of the nut and havemovement in the space between adjacent teeth of the nut, and providedwith toothend-engaging surfaces adjacent said projections.

3. In a spanner wrench for toothed nuts, awrench head having projectionsspaced to encompass two teeth only of the nut and have movement in thespace between adjacent teeth of the nut, the inner face of each projection being inclined at an angle of approximately twelve degrees withreference to the center of rotation of the wrench, said head beingprovided with tooth-end-engaging surfaces adjacent said projections.

t. A spanner wrench for turning nuts, comprising a wrench head havingspaced nut engaging means for registry with correspondingly spacedcomplemental means on a nut to effect the turning thereof, there beingsome clearance between said complemental means on said wrench head andnut to permit partial rotation therebetween, and nut periphery engagingsurfaces associated with said wrench head nut engaging means to serve asa bearing surface in continuity there- With.

5. A spanner Wrench for turning nuts, comprising a Wrench head havingspaced nut engaging means for registry With correspondingly spacedcomplemental means on a nut to effect the turning thereof, there beingsome clearance between said complemental means on said Wrench head andnut to per- 10 mit partial rotation therebetween, nnt pe ripheryengaging surfaces integrally associated With said Wrench head nutengaging means to serve as a bearing surface in continuity therewith,and angular projections on said engaging means inclined to saidc0mplemental means to effect a hit ing engagement therewith responsiveto turning said Wrench head.

In testimony whereof I affix my signature I GIDEON R. GAGNE.

